Aiming Device and Method for Archery Bow

ABSTRACT

An apparatus for improving an archer&#39;s aiming consistency by utilizing a directed light beam device mounted to an archery bow or integrated into the grip of an archery bow. Various embodiments provide an apparatus comprising a directed beam light source such as a laser, a power source for providing power to said light source, an actuation switch for allowing power to flow from said power source to said light source, a circuit for interconnecting said light source, said power source, and said actuation switch, and a jacket adapted to be attached to an archery bow within which said light source, said power source, said actuation switch, and said circuit are disposed, so that, when said jacket is attached to the archery bow said light source directs light forwardly from said bow toward a target and so that, during use, said actuation switch can be actuated by the same hand that is holding the bow in response to the natural motion of drawing the bow string. The jacket may fit over and around the stock grip of a bow and be shaped to comfortably fit the hand of an archer. Alternatively, the jacket may replace the stock grip normally provided with the bow.

FIELD OF THE INVENTION

This invention relates to aiming devices for weapons, particularlydirected light beam aiming devices for archery bows that illuminate atarget at the spot where an arrow is to strike the target, and which maybe used to indicate to the archer whether the bow is being held in theproper alignment for accurate aiming.

BACKGROUND OF THE INVENTION

All publications referred to herein are incorporated by reference intheir entirety to the same extent as if each individual publication orpatent application was specifically and individually indicated to beincorporated by reference. The following description includesinformation that may be useful in understanding the present invention.It is not an admission that any of the information provided herein isprior art or relevant to the presently claimed invention, or that anypublication specifically or implicitly referenced is prior art.

In aiming an archery bow there are three adjustments of the position ofthe bow that must be considered: elevation, windage and rotation. Theelevation of the arrow must be such that when it is released the arcuatetrajectory that it will follow will terminate at the desired point onthe target. As to windage, the lateral direction that the arrow ispointed must be directed toward the same point on the target. Inaddition, if the bow is not held in a vertical orientation, or if thebow rotates even slightly in the archer's hand, then the elevation andwindage adjustments will not be correct if they are made on theassumption that the bow is vertically oriented. Even slight variationsin elevation, windage, and rotation can dramatically affect aimingconsistency.

There are various kinds of bow sights for archery, but perhaps the mostcommon includes an aperture mounted to the bow through which the archerlooks at the target when the bow string is drawn back. In modernequipment, the bow-mounted aperture often includes several horizontalpins which are for use at different respective ranges (range being thedistance from the archer to the target). These devices are commonlycalled pin sights. If the aperture is the right distance above the arrowrest for the range to the target, if the correct pin is used forsighting, and if the string is consistently drawn back to the sameposition in relation to the bow and the eye of the user, this type ofsight works well when the bow is vertically oriented. In bows that arenot sued for competition, this type of sight can be improved byproviding a second aperture attached to the bow string itself to aid inpositioning the user's eye.

However, it is often the case that when the bow string is drawn back,the hand of the user gripping the bow exerts torque on the bow, causingit to rotate. When the bow rotates so that it is not vertically orientedand all else remains the same, the arrow will move to the left or rightof the target and up or down, typically missing the aiming point on thetarget. Yet, it will seem to the user that the bow has been properlysighted because the point on the target is in the aperture of the pinsight, and the second aperture attached to the string, where used. Suchrotation makes it difficult for the archer to maintain consistentshooting accuracy.

It has been observed that the sighting problem resulting frompre-release bow rotation can be diagnosed and alleviated by the use of alaser aiming device that illuminates a point on the target with a laserbeam from a laser mounted on the bow. If the user exerts torque on thebow, the bow rotates around an axis approximately coincident with thearm holding the bow. The archer will naturally compensate by moving torealign the aperture sight onto the target, but because the bow hasrotated, the laser dot will have moved off the point of aim viewedthrough the aperture sight. However, when using a laser device as atraining aid, consistent aim for a given range can be maintained bymoving the bow so that the aiming point viewed through the aperturesight is coincident with the illuminated dot created by the laser.

The illuminated laser dot is only coincident with the impact point ofthe arrow at the single given range, due to the offset of the lasersource and the arcuate trajectory of the arrow. For all other ranges,the illuminated dot will be either above or below the impact point.However, the closer the laser beam source is to the axis of rotation,the less offset there will be between the arrow impact point and theilluminated dot on the target at ranges other than the calibrationrange. For short ranges, where the arrow trajectory is close to flat, alaser source located near the arrow shelf will place a dot on the targetthat is very close to the actual impact point of the arrow.Additionally, a laser dot provides a physical aiming point on thetarget, so the archer can compensate for changes in range by aiming soas to hold the dot an appropriate distance above or below the desiredimpact point.

Various types of laser aiming devices for archery bows are known. Forexample, Huang et al., U.S. Pat. No. 5,495,675 describes a semiconductorlaser attached to a bow by a mounting base and three x-, y- and z-axisholder frames. A separate on-off switch is connected to the module by awire and is provided with an adhesive tape to mount the switch somewhereon the bow. Hodge et al., International Patent Publication No.WO2004/094934 describes a laser attached to a bow by a mounting bracket,the laser having a pull switch that activates the laser in response todrawing the bow.

Laser aiming devices for handguns and rifles are also known. Forexample, Toole U.S. Pat. No. 5,179,235; Toole et al. U.S. Pat. No.5,435,091; Toole et al. U.S. Pat. No. 5,706,600; Danielson et al. U.S.Pat. No. 6,526,688; and Danielson U.S. Pat. No. 7,260,910, each disclosevarious embodiments of laser aiming devices adapted for use with ahandgun. However, they do not address the particular challenges thatarise in the use of a bow, which is a much different weapon from ahandgun.

Unfortunately, known laser aiming devices leave significant problemsunsolved, such as minimizing the effects of the aiming device on bowbalance, minimizing the effects that bow rotation has on the laser pointlocation at the target, and actuating the laser when needed withoutinterfering with the normal bow and string movements of the archer.Since these prior devices place the laser source at some distance fromthe arrow shelf, the dot-to-impact-point offset due to changes in rangeis relatively large, and the laser systems disclosed cannot be madecoincident with the arrow's path at short ranges. Additionally, thepreviously-known laser aiming devices for bows are bulky and poorlyintegrated with the structure of the bow, making the devices prone tobeing knocked out of alignment or damaged during both storage and fielduse. If the device must be removed for storage or transport, then eachremount creates another opportunity for the device to become out ofalignment. Also, when hunting, equipment that tends to snag or catch onvegetation creates noise and makes moving stealthily more difficult; andfurthermore, equipment for hunting use must be silent in operation. Itis a particular drawback of these previously known devices that they areawkward to actuate on a shot-to-shot basis so that either they must beleft on or they tend to affect the aim of the archer.

Therefore, there is a need in the art for a compact sighting system forarchery bows in which the directed beam light source, the power source,the driving circuit, and actuation switch are substantially integratedinto the existing dimensions of an archery bow's grip, such that thearrangement creates a robust, stable, unobtrusive system that is lesssusceptible to damage, can remain in place during storage and transport,allows for minimal offset between the illuminated dot and the arrowimpact point, and may be actuated with minimal effect on the aim of thearcher.

SUMMARY OF THE INVENTION

The present invention includes an apparatus for improving an archer'saiming consistency by utilizing a directed light beam device mounted toan archery bow or integrated to the grip of an archery bow.

Various embodiments provide for an apparatus comprising a directed beamlight source, a power source for providing power to said directed beamlight source, an actuation switch for allowing power to flow from saidpower source to said light source, a circuit for interconnecting saidlight source, said power source, and said actuation switch, and a jacketadapted to be attached to an archery bow within which said light source,said power source, said actuation switch, and said circuit are disposed,so that, when said jacket is attached to the archery bow said lightsource directs light forwardly from said bow toward a target and so thatduring use, said actuation switch can be actuated by the same hand thatis holding the bow in response to the natural motion of drawing the bowstring.

In one embodiment, the jacket fits over and around the grip of a bow andis shaped to comfortably fit the hand of an archer. However, the jacketmay instead replace the factory grip normally provided with the bow.

As used in the specification, claims and abstract hereof, the term“jacket” is intended to encompass both of these possibilities. Theactuation switch is located on the back side of the jacket and is thusnaturally activated by pressure from the archer's hand as the bow isdrawn. Releasing the arrow, or returning the bow to the ready position,deactivates the directed beam source.

In another embodiment, the directed beam light source comprises a laser.The laser may be disposed near the upper area of the jacket, on the sameside of the jacket as the archer's fingers, and may further be disposedin a spring-loaded, adjustable mounting such that the direction of thelaser beam can be adjusted for both windage and elevation. The laser ispreferably located on the side of the grip opposite the fingers, but maybe located in front of the fingers or on the arrow shelf withoutdeparting from the principles of the invention.

Other features and advantages of the invention will become apparent fromthe following detailed description, taken in conjunction with theaccompanying drawings which illustrate, by way of example, variousfeatures of embodiments of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective of a preferred embodiment of an aiming devicefor an archery bow according to the present invention, attached to anarchery bow shown in phantom.

FIG. 2 is a cross section of the aiming device of FIG. 1, taken alongline 2-2 thereof, attached to the archery bow in phantom.

FIG. 3 is a perspective of the aiming device of FIG. 1, showing thearchery bow, the interior components of the aiming device and, inphantom, the left side of the device.

FIG. 4 is a schematic of a representative electrical circuit for theaiming device of FIG. 1.

FIG. 5 is a cross section of the aiming device of FIG. 1, taken alongline 5-5 thereof.

FIG. 6 is a perspective of the aiming device of FIG. 1, attached to thearchery bow and gripped by the left hand of an archer, shown in phantom.

DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

Unless defined otherwise, technical and scientific terms used hereinhave the same meaning as commonly understood by a person having ordinaryskill in the art to which this invention belongs.

One skilled in the art will recognize many methods and materials similaror equivalent to those described herein, which could be used in thepractice of the present invention. The present invention is not intendedto be limited to the specific methods and materials described herein.

An aiming device according to the present invention comprises a gripjacket that fits on the grip of an archery bow and that includes adirected energy source, preferably a laser, a power source for thedirected energy source, and at least one switch that actuates the energysource in response to pressure on the back of the jacket, whichnaturally occurs when the bow string is drawn. However, one or moreswitches could be mounted in locations other than the back of the gripwithout departing from the principles of the invention. It is to beunderstood that, for the purpose of the specification, claims, drawingsand abstract hereof, the term “light” shall broadly mean electromagneticenergy whether in the visible spectrum or not.

More specifically, a preferred embodiment of an aiming device 10according to the invention shown in FIGS. 1 and 2, comprises jacket 12,having two parts. A first part 14 fits on and wraps around a first side16 and the back 18 of the grip 20 of an archery bow 22, and a secondpart 24 fits on the second side 26 of the grip 20 and attaches along aback edge 28 to the first part 14. A laser module is disposed in thefirst part 14 of the jacket at the top 32 thereof adjacent the firstside 16 of the grip 20. An actuation switch 34 is disposed in the firstpart 14 of the jacket at the top thereof adjacent the back 18 of thegrip.

Although the laser aiming device described and claimed herein is calleda “jacket” to emphasize that it may be placed over the stock grip of thebow itself, the scope of the claims is not intended to be limitedthereby. It is to be recognized that others might refer to a laseraiming device according to the present invention itself as a “grip,” andthat the use of such terminology would not take such a device outsidethe scope of the claims. Thus, the terms “jacket” and “grip” may be usedinterchangeably with reference to actual products, without departingfrom the principles of the invention.

While it is easier to manufacture the jacket in two parts, it is to berecognized that the jacket could be a single part without departing fromthe principles of the invention. It can be seen in FIG. 2 that when bothhalves of the jacket 12 are mounted in place, jacket 12 is generallyC-shaped in cross section and wraps around the bow grip 20. The firstpart 14 of the jacket is attached to the bow grip 20 by screw 15 and thesecond part 24 of the jacket is attached to the bow grip by screw 25.Screw 35 attaches first part 14 to second part 24 directly withoutextending through the bow grip 20. The screws are located so as to avoidthe internal components while providing a robust, tight connectionbetween jacket 12 and the bow grip 20.

Turning to FIG. 3, the preferred embodiment of the aiming device alsoincludes a laser drive circuit 36 and two battery holders 38, 39 forholding batteries 40, 41 that power the laser drive circuit. For thepurpose of the specification, drawings, claims and abstract, the batteryholders 38, 39 are each referred to herein as a “power source,” with orwithout the battery installed, the term “power source” being intended toencompass any appropriate source, or provision for, providing power tothe directed beam light source. Preferably, the battery holder isadapted to receive a thin-profile Cr2032 cell, or equivalent, whichpermits the jacket to be relatively thin. The battery holders 38, 39comprises cavities 42, 43 formed in the first part 14 of the jacket, andpairs of positive and negative battery contacts 44, 45 and 46, 47respectively, connected to a circuit board 48 that also supports thelaser drive circuit 36. The laser drive circuit 36 includes one or morestandard integrated circuit components used to drive a diode laser, aswill be readily understood by a person having ordinary skill in the art.

Preferably, the device includes a power switch 50, as well as theactuation switch 34. The power switch is for allowing power to flow fromthe battery to the drive circuit, or not. This allows the archer todisable the aiming device, for example during transport or storage, orsimply to preserve battery energy when the bow is in use but thesighting system is not needed. Preferably, the power switch 50 isdisposed in the first part 14 of the jacket at the bottom 51 thereofadjacent the back 18 of the bow grip 20. However, it is to be recognizedthat the power switch may be placed elsewhere, or eliminated entirely,without departing from the principles of the invention. Preferably, thepower switch is a push button switch that closes or opens a circuit eachtime it is pushed. However, it is to be recognized that other types ofswitches could be used as a power switch without departing from theprinciples of the invention.

The laser module 30 comprises a diode laser 56 and a lens 58 mounted ina tubular enclosure 56, as shown (cutaway) in FIG. 3. To accommodate thelaser module, the jacket 12 includes an outwardly-directed laser housing60, having a laser module receiving chamber 62 formed therein. With thelaser module 30 placed therein, the chamber is closed by a cover plate64. The front end of the tubular enclosure is rounded, preferablyforming a hemisphere, to form a convex laser module bearing 66, and acorresponding concave bearing surface 68 is formed in the front 70 ofthe receiving chamber 62 to receive the bearing 66. As described morefully below, this structure enables the laser module to be adjusted intwo dimensions for elevation and windage calibration. The bearing 66includes a front window 72 formed therein for laser light to passthrough the module, the lens 58 being disposed between the window 72 andthe diode laser 56 at a position to essentially collimate the lightemitted by the diode laser and direct that light forwardly toward atarget, as will be readily understood by a person having ordinary skillin the art. It is to be understood that the window 72 may be covered bytransparent material or may simply be an opening.

A significant feature of the preferred embodiment of an aiming deviceaccording to the present invention is that the laser module is disposednear the top of the device adjacent the arrow shelf 74 of the bow 22.This location results in the laser light beam emanating from a point inclose proximity to the arrow's point of departure and to the bow's axisof rotation, thus maintaining more accurate aim over a wider variationin target distances.

FIG. 4 shows a schematic of a representative electrical circuit for theaiming device. The laser module 30 is connected by wires 52 to thecircuit board 48. The actuation switch 34 is connected by wires 54 tothe drive circuit 36. The batteries 40, 41 are also connected to thedrive circuit 36. Power switch 50 is connected to the drive circuit 36,in series with the batteries 40, 41. Finally, the actuation switch 34 isconnected to the drive circuit 36 to actuate the laser where the switchis pushed. It is to be recognized that the actuation switch may belocated or configured differently on the jacket, and that additionalactuation switches may be added without departing from the principles ofthe invention.

As shown in FIGS. 3 and 5, an elevation adjustment screw 76 and awindage adjustment screw 78 are threaded into respectiveorthogonally-aligned apertures 80 and 82 of the chamber 62. A spring 84exerts force on the back 86 of the laser module to press and hold thebearing 66 against the bearing surface 68 and to hold the tubularenclosure 59 against the adjustment screws 76, 78. Consequently, whenthose screws are either advanced or withdrawn they cause the lasermodule to rotate about the bearing 66, which changes the direction thatthe laser light propagates.

The aiming device is adjusted initially at the time it is mounted on thebow to account for alignment variations in the components and to rangethe device. This calibration process is completed at a known distance soas to ensure that when the light illuminates a target at that distance,the arrow will strike the target at the spot produced by the light ifthe bow string is properly drawn and released.

It is another important aspect of this invention that, because of theintegrated chamber for the laser module, the laser module's closeproximity to the bow structure, and the laser module's robust mountingarrangement, it is not likely to be bumped, snagged, or jarred duringuse, and it does not need to be demounted for storage or transport.Therefore, the laser device can be relied upon to remain calibratedthrough multiple outings.

While it is contemplated that the preferred embodiment will employ adiode laser as a source of visible red light, it should be appreciatedthat other types of directed light beams might also be used withoutdeparting from the principles of the invention. For example, it is alsocontemplated that an infrared laser could be used together with gogglesworn by the archer that produce visible light in response to stimulationby infrared light. Similarly, a green or other color visible laser maybe used. And, in some cases, such as nighttime training exercises, anintense incoherent light source might also be used. Accordingly, for thepurpose of the specification, claims, drawings and abstract, “directedbeam” shall mean a beam of energy that is substantially collimated froma source thereof to a target that is within a useful range of an archerybow, and includes without limitation a substantially collimated Gaussianlight beam produced by a laser.

Turning to FIG. 6, which shows an archer's hand 88 (in phantom) grippingthe aiming device 10 mounted on the bow grip 20, the actuation switch 34is preferably disposed approximately where the web 90 between the user'sthumb and forefinger lies. Ordinarily, an archer is advised to maintaina relaxed grip on the bow so that the bow rests on the hand withoutbeing squeezed. However, when the string is drawn by the archer, thegrip will push back into the archer's hand. Because of this reaction,the actuation switch is pushed in by the web of the user's hand, therebyturning on the laser. Thus, an important feature of the aiming device isthat the laser ordinarily is not turned on so much intentionally asautomatically when the archer selects a target and begins to draw thestring back. Equally important, the laser will automatically turn offwhen the arrow is released or the bow is returned to the ready positionand pressure on the actuation switch is released.

The terms and expressions which have been employed in the foregoingspecification are used therein as terms of description and not oflimitation, and there is no intention in the use of such terms andexpressions to exclude equivalents of the features shown and describedor portions thereof, it being recognized that the scope of the inventionis defined and limited only by the claims which follow.

1. A sighting device for an archery bow, comprising: a directed beamlight source; a power source for providing power to said directed beamlight source; an actuation switch for allowing power to flow from saidpower source to said light source; a circuit for interconnecting saidlight source, said power source and said actuation switch; and a jacketadapted to be attached to an archery bow, said light source, said powersource, said actuation switch and said circuit being disposed withinsaid jacket so that, when said jacket is attached to the archery bowsaid light source directs light forwardly from said bow toward a targetand so that said actuation switch can be actuated by the hand of aperson holding said bow by said jacket.
 2. The sighting device of claim1, wherein said bow has a back, two sides, an upper end and a lower endand said jacket has a back portion and two opposing side portions forcovering portions of said back and said two sides of said bow, and anupper end corresponding to said upper end of said bow and a lower endcorresponding to said lower end of said bow.
 3. The sighting device ofclaim 2, wherein said actuation switch is disposed in said back portionof said jacket.
 4. The sighting device of claim 3, wherein saidactuation switch is disposed more toward said upper end of said gripthan toward said lower end of said jacket so as to actuate and therebyallow power to flow from said power source to said light source, inresponse to the pressure naturally applied by the user's hand when thebow string is drawn.
 5. The sighting device of claim 4, wherein saidactuation switch is a spring return pushbutton switch adapted to closewhen the hand of a user applies pressure to said jacket as the bow isdrawn and thereby allow power to flow from said power source to saidlight source, and to open when pressure on said switch is released. 6.The sighting device of claim 5, wherein said jacket has a thinnerportion disposed at the position of said actuation switch and saidactuation switch is disposed interior to said jacket beneath saidthinner portion of said jacket.
 7. The sighting device of claim 6,wherein outer surfaces of said back and two sides of said jacket areshaped so as to conform generally to the palm, thumb and four fingers ofa human hand whereby the thumb is on one side of the jacket, the fourfingers are on the other side of the jacket, and the web of tissuebetween the thumb and forefinger is disposed substantially over saidactuation switch.
 8. The sighting device of claim 7, wherein saiddirected beam light source comprises a laser.
 9. The sighting device ofclaim 8, wherein said laser is disposed on the same side of said jacketas the user's fingers lay during use, more toward said upper end of saidjacket than toward said lower end of said grip.
 10. The sighting deviceof claim 9, wherein said jacket comprises first and second interlockingparts, the first of said interlocking parts substantially comprisingsaid first side and said back side of said jacket and the second of saidinterlocking parts substantially comprising the second side of saidjacket.
 11. The sighting device of claim 10, wherein said actuationswitch is a flexible membrane switch.
 12. The sighting device of claim10 wherein said circuit comprises a flexible circuit.
 13. The sightingdevice of claim 8, said actuation switch is a flexible membrane switch.14. The sighting device of claim 8 wherein said circuit comprises aflexible circuit.
 15. The sighting device of claim 2, wherein outersurfaces of said back and two sides of said jacket are shaped so thatwhen the thumb of a user is on one side of the jacket and the fourfingers are on the other side of the jacket, the web of tissue betweenthe thumb and forefinger is disposed substantially over said actuationswitch.
 16. The sighting device of claim 15, wherein said directed beamlight source comprises a laser.
 17. The sighting device of claim 15,wherein said laser source is disposed on the same side of said jacket asthe user's fingers during use, more toward said upper end of said gripthan toward said lower end of said jacket.
 18. The sighting device ofclaim 1, wherein said directed beam light source comprises a laser. 19.The sighting device of claim 18, wherein said laser is disposed on oneside of said jacket more toward said upper end of said jacket thantoward said lower end of said jacket.
 20. The sighting device of claim18, further comprising a laser assembly for holding said laser, saidjacket including devices adapted to interact with said laser assembly soas to adjust said laser for elevation and windage.
 21. The sightingdevice of claim 1, wherein said actuation switch is a spring returnpushbutton switch adapted to close when the hand of a user appliespressure to said jacket so as to allow power to flow from said powersource to said light source, and to open when pressure on said switch isreleased.
 22. The sighting device of claim 1, wherein said jacketcomprises first and second interlocking parts, the first of saidinterlocking parts substantially comprising a first side and a back sideof said jacket corresponding to one side of said bow, and the second ofsaid interlocking parts substantially comprising a second side of saidjacket corresponding to the other side of said bow.
 23. The sightingdevice of claim 22, wherein said directed beam light source and saidactuation switch are disposed in said first part of said jacket, saidlight source being disposed more toward the upper end of said jacketthan the lower end thereof, on said first side thereof, and saidactuation switch being disposed more toward an upper end of said gripthan the lower end thereof, on said back side thereof.
 24. The sightingdevice of claim 1, said actuation switch comprises a flexible membraneswitch.
 25. The sighting device of claim 1, wherein said circuitcomprises a flexible circuit.
 26. An archery bow having a directed lightbeam aiming device, comprising: a bow member; a jacket disposed on saidbow member for holding the bow with one hand; a directed beam lightsource disposed within said jacket so as to direct light toward a targetwhen said light source is actuated; a power source disposed within saidjacket for providing power to said light source; an actuation switchdisposed within said jacket for allowing power to flow from said powersource to said light source; and a circuit disposed within said jacketfor interconnecting said light source, said power source and saidactuation switch, said actuation switch being disposed within saidjacket so that during use, said actuation switch can be actuated by thesame hand that is holding the bow.
 27. The archery bow of claim 26,wherein said jacket has an upper end and a lower end and said actuationswitch is disposed more toward said upper end than said lower end so asto close and thereby allow power to flow from said power source to saidlight source in response to the pressure naturally applied when the bowstring is drawn.
 28. The archery bow of claim 27, wherein said actuationswitch is a spring return pushbutton switch adapted to close when thehand of a user applies pressure to said jacket as the bow is drawn, andto close when pressure on said switch is released.
 29. The archery bowof claim 28, wherein said directed light beam source is a laser.
 30. Thearchery bow of claim 26, wherein said directed light beam source is alaser.
 31. The archery bow of claim 26, wherein said jacket has an upperend and a lower end, said directed light beam source is a laser, andsaid laser is disposed on the same side of said jacket as the user'sfingers lay during use, more toward said upper end of said jacket thansaid lower end of said jacket.
 32. The archery bow of claim 26, whereinouter surfaces of said jacket are shaped so that when the thumb of auser is on one side of the jacket and the four fingers are on the otherside of jacket, the web of tissue between the thumb and forefinger isdisposed substantially over said actuation switch.
 33. The archery bowof claim 32, wherein said directed light beam source is a laser.